673397531 has 8 divisors (see below), whose sum is σ = 701500800. Its totient is φ = 645693120.

The previous prime is 673397513. The next prime is 673397533. The reversal of 673397531 is 135793376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673397531 - 2⁶ = 673397467 is a prime.

It is a super-2 number, since 2×673397531² = 906928469513791922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673397533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96266 + ... + 103023.

It is an arithmetic number, because the mean of its divisors is an integer number (87687600).

Almost surely, 2^673397531 is an apocalyptic number.

673397531 is a deficient number, since it is larger than the sum of its proper divisors (28103269).

673397531 is a wasteful number, since it uses less digits than its factorization.

673397531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199429.

The product of its digits is 357210, while the sum is 44.

The square root of 673397531 is about 25949.9042580122. The cubic root of 673397531 is about 876.5106013702.

The spelling of 673397531 in words is "six hundred seventy-three million, three hundred ninety-seven thousand, five hundred thirty-one".